Navigation Links
Our ability to identify the source of pain varies across the body
Date:6/5/2014

"Where does it hurt?" is the first question asked to any person in pain.

A new UCL study defines for the first time how our ability to identify where it hurts, called "spatial acuity", varies across the body, being most sensitive at the forehead and fingertips.

Using lasers to cause pain to 26 healthy volunteers without any touch, the researchers produced the first systematic map of how acuity for pain is distributed across the body. The work is published in the journal Annals of Neurology and was funded by the Wellcome Trust.

With the exception of the hairless skin on the hands, spatial acuity improves towards the centre of the body whereas the acuity for touch is best at the extremities. This spatial pattern was highly consistent across all participants.

The experiment was also conducted on a rare patient lacking a sense of touch, but who normally feels pain. The results for this patient were consistent with those for healthy volunteers, proving that acuity for pain does not require a functioning sense of touch.

"Acuity for touch has been known for more than a century, and tested daily in neurology to assess the state of sensory nerves on the body. It is striking that until now nobody had done the same for pain," says lead author Dr Flavia Mancini of the UCL Institute of Cognitive Neuroscience. "If you try to test pain with a physical object like a needle, you are also stimulating touch. This clouds the results, like taking an eye test wearing sunglasses. Using a specially-calibrated laser, we stimulate only the pain nerves in the upper layer of skin and not the deeper cells that sense touch."

Volunteers were blindfolded and had specially-calibrated pairs of lasers targeted at various parts of their body. These lasers cause a brief sensation of pinprick pain. Sometimes only one laser would be activated, and sometimes both would be, unknown to participants. They were asked whether they felt one 'sti
'/>"/>

Contact: Harry Dayantis
h.dayantis@ucl.ac.uk
44-020-310-83844
University College London
Source:Eurekalert  

Page: 1 2 3

Related biology news :

1. Vines choke a forests ability to capture carbon, Smithsonian scientists report
2. EPA ToxCast data validates BioMAP® systems ability to predict drug, chemical toxicities
3. Stability lost as supernovae explode
4. MIPT experts reveal the secret of radiation vulnerability
5. Ability to isolate and grow breast tissue stem cells could speed cancer research
6. When highest perceptual ability occurs in a day?
7. UN-­backed symposium: Beyond Gross Domestic Product -- transitioning into sustainability
8. Chronic stress heightens vulnerability to diet-related metabolic risk
9. Research sees overlap in genes altered in schizophrenia, autism, intellectual disability
10. Smoking may dull obese womens ability to taste fat and sugar
11. New model shows moderate resource use & reduced economic inequality keys to sustainability
Post Your Comments:
*Name:
*Comment:
*Email:
Related Image:
Our ability to identify the source of pain varies across the body
(Date:4/8/2015)...  Infinisource, a leading provider of SaaS-based Human Capital ... leading supplier of biometric identification and security solutions, ... advanced biometrically-enabled time clock, the companies announced today. ... setting a bold, new standard for the collection ... and mid-size employer. When connected to the iSolved ...
(Date:4/2/2015)... According to preliminary estimates Fingerprint ... higher than 125 MSEK. This exceeds the guidance provided ... revenues for Q1 2015 would be in line with ... 2014. The operating result for the first quarter is ... report will as previously communicated be published on May ...
(Date:3/31/2015)... March 31, 2015  Elephant Talk Communications Corp. (NYSE ... provider of Software Defined Network Architecture (ET Software DNA® ... revenue of approximately $20.4 million for the year ended ... million for the year ended December 31, 2013. ... Company had completed its multi-year transition away from its ...
Breaking Biology News(10 mins):iSolved Time Clock Offers Unmatched Accuracy due to Morpho Biometrics 2iSolved Time Clock Offers Unmatched Accuracy due to Morpho Biometrics 3Fingerprint Cards Revises Revenues for Q1 2015 2Elephant Talk Reports 2014 Fourth Quarter and Year End Financial Results 2Elephant Talk Reports 2014 Fourth Quarter and Year End Financial Results 3Elephant Talk Reports 2014 Fourth Quarter and Year End Financial Results 4Elephant Talk Reports 2014 Fourth Quarter and Year End Financial Results 5Elephant Talk Reports 2014 Fourth Quarter and Year End Financial Results 6
... will host its 2014 Biodefense and Emerging Diseases Research ... Hotel in Washington, DC. The purpose of this ... out research to defend against the threat of bioterrorism ... recognizing that emerging infectious diseases serve as a paradigm ...
... RNA is not merely a transitional state between DNA and ... how genes are turned into a protein product. Gaining a ... on diseases that arise when this function goes awry. ... up to offer a new method for elucidating RNA regulation. ...
... deadly form of primary malignant brain cancer accounting for ... in adults between the ages of 45 and 70. ... only temporarily contained by combined surgery, chemotherapy and radiation ... in an average patient survival time of less than ...
Cached Biology News:Penn biologists establish new method for studying RNA's regulatory 'footprint' 2Penn biologists establish new method for studying RNA's regulatory 'footprint' 3Stopping tumors in their path 2
(Date:4/17/2015)... BellBrook Labs announced today that ... the powerful Orthogonal Pooled Screening (OPS) Platform developed ... the Lankenau Institute for Medical Research (LCGC) in ... improve successful drug discovery outcomes using far more ... libraries available nowhere else, coupled to a state-of-the-art ...
(Date:4/16/2015)... (PRWEB) April 16, 2015 ... data solutions driven by Semantic Web technology, and ... specialist information and services for the academic and ... that its joint solution ‘Smart Data Lake for ... finalist for the 2015 Bio-IT ‘Best of Show’ ...
(Date:4/16/2015)... Proove Biosciences , Inc. is pleased ... for the 2015 BIO International Convention. Hosted by ... Convention will take place June 15-18 at the Pennsylvania ... BIO contest, industry leaders will be voting for companies ... The community voting period began on April 14, 2015 ...
(Date:4/16/2015)... (PRWEB) April 16, 2015 According ... overexertion involving an outside source was ranked first ... includes injuries related to lifting, pushing, pulling, holding, ... in direct costs. The David Round Company takes ... committed to working hard to develop and design ...
Breaking Biology Technology:BellBrook Labs and Lankenau Institute Partner to Accelerate Drug Discovery using Orthogonal Pooled Screening 2Cambridge Semantics and Informa Named Bio-IT Award Finalist for Smart Data Lake Solution for Clinical Trial and Competitive Intelligence 2Cambridge Semantics and Informa Named Bio-IT Award Finalist for Smart Data Lake Solution for Clinical Trial and Competitive Intelligence 3Proove Bisociences to Participate in the Buzz of BIO at the 2015 BIO International Convention 2Proove Bisociences to Participate in the Buzz of BIO at the 2015 BIO International Convention 3The David Round Company Helps Companies Meet OSHA Standards by Combining Safety, Ergonomics, and Productivity 2
... is known for its innovation and ability to take ... changing the dynamics and places like South Korea, China ... too. India, for example, is gaining ground in software ... that we hear so much about. The advantages the ...
... an idea of the intricacy possible in machining and tool ... EDM, you can tunnel into the thin side of a ... and leave the top and lower surfaces of that same ... used by Steve Plendl, the lead EDM instructor at ...
... exploring new technologies that will result in a more ... Systems based in Menasha, Wisconsin is strategically investing ... of care it offers by focusing on those initiatives ... ,Affinity has been able to prioritize such investments as ...
Cached Biology Technology:Keeping Innovation Vibrant in the U.S. 2Powerful, Intricate Technology Taught in CVTCs New Tool and Die Program 2Powerful, Intricate Technology Taught in CVTCs New Tool and Die Program 3Affinity Health Streamlines IT Governance 2
...
...
... data entry by collecting data from any ... Collect is extremely easy to use ... data entry. An excellent solution for ... spectrophotometers, force gauges, digital calipers, bar code ...
... the autofluorescent pigment lipofuscin accumulates in ... including neurons. The presence of lipofuscin ... fluorescence microscopy in the central nervous ... and emission spectra, which overlaps with ...
Biology Products: